# CS48520M

**Chipanalog** · RS-485 / RS-422 ICs · MSOP-8

CS48520M from Chipanalog, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RO | output | Receiver data output; per the truth table it is driven high-impedance when REB is high or open, and the bus-fail default drives it high. |
| 2 | REB | input | Receiver enable, active low, with an internal resistor pull-up; the receiver is disabled (RO high-impedance) when REB is high or open. |
| 3 | DE | input | Driver enable, active high, with an internal resistor pull-down; the driver is disabled (A and B high-impedance) when DE is low or open. |
| 4 | DI | input | Driver data input with an internal resistor pull-up to VCC; when the driver is enabled and DI is open, output A goes high. |
| 5 | GND | power_in | Ground reference for all pins; all voltages are referenced to GND. |
| 6 | A | bidirectional | Bus input/output port (non-inverting driver output, receiver input); absolute maximum bus voltage is -8 V to 13 V and recommended bus input voltage is -7 V to 12 V. |
| 7 | B | bidirectional | Bus input/output port (inverting driver output, receiver input); absolute maximum bus voltage is -8 V to 13 V and recommended bus input voltage is -7 V to 12 V. |
| 8 | VCC | power_in | Supply voltage, 3.0 V to 5.5 V recommended with an absolute maximum of 7 V; a 100 nF to 220 nF decoupling capacitor should be placed as close to this pin as possible. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Chipanalog |
| Package | MSOP-8 |
| Category | Interface |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `CS48520M`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `cs48520m-etched.step` / `cs48520m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cs48520m.step` / `cs48520m.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Chipanalog datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602993951821475840) (22 pp, sha256 `9093c3d6379b67e0`, retrieved 2026-10-10, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cs48520m-datasheet.pdf)